I don't know how it is where you live, but in Brooklyn, NY there are a couple of shops that I know that will "make" an alternator to your specs. What they do is they take an old broken one, fix it and beef it up in the process. You may want to talk to electricians in your area, some of them might be able to do it for you.

Never be afraid to do something yourself. Remember - amateur built the Ark, professionals built the Titanic.

Where do i go to for a beefed up alternator?
Like what kinda shops in town?

My alternator is dying. and i think my battery is too. So i need to replace them b4 it gets worse (i.e carpc makes it in there )

You can also take a peak at http://www.stinger-aamp.com/. They carry high output alternators, as well as a lot of other power goodies (batteries too).

We used to sell their equipment in the shop I used to work at. Solid stuff, especially if you are looking for a really beefy alternator (they even make one that provides up to 270 Amps!!). Depending on your location, one of your local car stereo shops should sell them or carry a competing brand with similar features.

If that doesn't work out, you can always talk to your friendly neighborhood alternator shop. arkadiyp is right, you can get some pretty serious alternators from little "mom-n-pop" alternator/starter shops that know what they are doing.